From the TSA website:

TSA Hiring For Part-Time Screeners At 98 Airports Across The Counrty

http://129.33.119.130/public/display...00051980067103

"Transportation security screeners' duties include providing frontline security and protection of travelers, airports and airplanes by identifying dangerous objects in baggage and on passengers. Their job is to prevent those objects from being transported onto aircraft by utilizing diverse, cutting edge electronic detection and imaging equipment, as well as using the lessons learned from a concentrated training curriculum. "

So thats what their suppose to do!!